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//
// Copyright 2006 Johannes Hofmann <Johannes.Hofmann@gmx.de>
//
// This software may be used and distributed according to the terms
// of the GNU General Public License, incorporated herein by reference.

#ifndef PROJECTION_H
#define PROJECTION_H

#include "Hill.H"
#include "ViewParams.H"

class Projection {
 protected:
  double pi_d;

 public:
  typedef enum {
    TANGENTIAL = 0,
    SPHAERIC   = 1
  } Projection_t;

  Projection();

  virtual void get_coordinates(double a_view, double a_nick,
	const ViewParams *parms, double *x, double *y);
  
  virtual int comp_params(const Hill *m1, const Hill *m2, ViewParams *parms);
};
#endif